﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace YYS
{
    public class v3Helper
    {
        public readonly static Dictionary<string, string> colMaps = new Dictionary<string, string>()
        {
            { "FnCI_ID", "ciId" },
            { "FsCI_Name", "ciName" },
            { "FnUI_ID", "uiId" },
            { "FnUI_Type", "uiType" },
            { "FsUI_Name", "uiName" },

            { "FnMD_ID", "mdId" },
            { "FnML_Way", "mlWay" },
            { "FdSCL_PlanTime", "sclPlanTime" },
            { "FsMI_URL", "miUrl" },

            { "FnLL_ID", "llId" },
            { "FnLL_Type", "llType" },
            { "FdLL_StartTime", "llStartTime" },
            { "FdLL_FinishTime", "llFinishTime" },
            { "FnFIL_ID", "filId" }
        };


        /// <summary>
        /// 获取userAgent
        /// </summary>
        /// <returns></returns>
        public static string userAgent()
        {
            var Request = System.Web.HttpContext.Current != null ? System.Web.HttpContext.Current.Request : null;
            if (Request == null) return "";
            return Request.UserAgent.xTrim() + Request.ServerVariables["HTTP_USER_AGENT"].xTrim() + Request.Headers["User-Agent"].xTrim();
        }

        /// <summary>
        /// 浏览器环境
        /// <para>0：非微信浏览器；1：微信手机端；2：企业微信；3：微信PC端；4：微信小程序</para>
        /// </summary>
        /// <returns></returns>
        public static int whatBrowser()
        {
            string userAgent = v3Helper.userAgent();

            var wx = userAgent.IndexOf("micromessenger", StringComparison.OrdinalIgnoreCase) > 0;
            var work = userAgent.IndexOf("wxwork", StringComparison.OrdinalIgnoreCase) > 0;
            var pc = userAgent.IndexOf("WindowsWechat", StringComparison.OrdinalIgnoreCase) > 0;
            var mini = userAgent.IndexOf("miniProgram", StringComparison.OrdinalIgnoreCase) > 0;
            var browser = wx && mini ? 4 /*微信小程序*/
                : wx && work ? 2 /*企业微信*/
                : wx && pc ? 3 /*PC端微信*/
                : wx ? 1 /*手机端微信*/
                : 0/*非微信*/;
            return browser;
        }

        /// <summary>
        /// 是否微信浏览器
        /// </summary>
        /// <returns></returns>
        public bool isWxBrowser()
        {
            return whatBrowser() > 0;
        }

        /// <summary>
        /// 判断是否手机浏览器
        /// </summary>
        /// <returns></returns>
        public static bool isMobileBrowser()
        {
            string userAgent = v3Helper.userAgent();
            if (string.IsNullOrWhiteSpace(userAgent)) return false;

            System.Text.RegularExpressions.Regex b = new System.Text.RegularExpressions.Regex(@"(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino", System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Multiline);
            System.Text.RegularExpressions.Regex v = new System.Text.RegularExpressions.Regex(@"1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-", System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Multiline);
            return (b.IsMatch(userAgent) || v.IsMatch(userAgent.Substring(0, 4)));
        }

        /// <summary>
        /// 客户端IP地址
        /// </summary>
        /// <returns></returns>
        public static string clientIp()
        {
            string ip = "";
            var Request = System.Web.HttpContext.Current != null ? System.Web.HttpContext.Current.Request : null;

            if (Request != null)
            {
                try
                {
                    ip = Request.ServerVariables["HTTP_X_FORWARDED_FOR"].xTrim();
                    if (ip.Trim().Length > 0)
                    {
                        if (ip.Contains(":"))
                        {
                            ip = ip.Substring(0, ip.IndexOf(':')).Trim();
                        }
                        if (ip.Contains(","))
                        {
                            ip = ip.Split(',')[0].xTrim();
                        }
                    }
                }
                catch { }
            }

            if (ip == "" || ip == "::1")
            {
                if (Request != null)
                {
                    try
                    {
                        if (Request.ServerVariables["REMOTE_ADDR"] != null)
                        {
                            ip = Request.ServerVariables["REMOTE_ADDR"].ToString();
                        }
                    }
                    catch { }
                }
            }

            if (ip == "" || ip == "::1")
            {
                try
                {
                    System.ServiceModel.OperationContext context = System.ServiceModel.OperationContext.Current;
                    if (context != null)
                    {
                        System.ServiceModel.Channels.MessageProperties properties = context.IncomingMessageProperties;
                        System.ServiceModel.Channels.RemoteEndpointMessageProperty endpoint = properties[System.ServiceModel.Channels.RemoteEndpointMessageProperty.Name] as System.ServiceModel.Channels.RemoteEndpointMessageProperty;
                        ip = endpoint.Address;
                    }
                }
                catch { }
            }

            if (ip == "" || ip == "::1")
            {
                if (Request != null)
                {
                    try
                    {
                        ip = Request.UserHostAddress.xTrim();
                    }
                    catch { }
                }
            }

            if (ip == "" || ip == "::1") return "";
            return ip;
        }

        /// <summary>
        /// 统一加密敏感信息（前后端通用）
        /// </summary>
        /// <param name="msg">要加密的数据</param>
        /// <param name="aesKey">密钥，为 null 时使用随机密钥</param>
        /// <returns></returns>
        public static Xcode.ResultObj<string> uniEncrypt(string msg, string aesKey = null)
        {
            var data = new Xcode.ResultObj<string>();
            if (string.IsNullOrWhiteSpace(msg))
            {
                data.Obj = msg;
                return data;
            }
            if (aesKey != null)
            {
                aesKey = aesKey.xTrim().PadLeft(32, '0');
                var key_Byte = System.Text.Encoding.UTF8.GetBytes(aesKey.Substring(0, 16));
                var ivByte = System.Text.Encoding.UTF8.GetBytes(string.Join("", aesKey.Reverse()).Substring(0, 16));
                string errMsg;
                data.Obj = msg.xAES128Encrypt(key_Byte, ivByte, out errMsg).xToSafeBase64();
                data.SetError(errMsg);
            }
            else
            {
                var key = Xcode.API.xNoncestr(8);
                aesKey = key.xEncryptMd5();
                var key_Byte = System.Text.Encoding.UTF8.GetBytes(aesKey.Substring(0, 16));
                var ivByte = System.Text.Encoding.UTF8.GetBytes(string.Join("", aesKey.Reverse()).Substring(0, 16));
                string errMsg;
                data.Obj = (key + msg.xAES128Encrypt(key_Byte, ivByte, out errMsg)).xToSafeBase64();
                data.SetError(errMsg);
            }
            return data;
        }
        /// <summary>
        /// 统一解密敏感信息（前后端通用）
        /// </summary>
        /// <param name="msg">要解密的数据</param>
        /// <param name="aesKey">密钥，为 null 时从 msg 截取密钥</param>
        /// <returns></returns>
        public static Xcode.ResultObj<string> uniDecrypt(string msg, string aesKey = null)
        {
            var data = new Xcode.ResultObj<string>();
            if (string.IsNullOrWhiteSpace(msg))
            {
                data.Obj = msg;
                return data;
            }
            if (aesKey != null)
            {
                msg = msg.xFromSafeBase64();
                aesKey = aesKey.xTrim().PadLeft(32, '0');
                var key_Byte = System.Text.Encoding.UTF8.GetBytes(aesKey.Substring(0, 16));
                var ivByte = System.Text.Encoding.UTF8.GetBytes(string.Join("", aesKey.Reverse()).Substring(0, 16));
                string errMsg;
                data.Obj = msg.xAES128Decrypt(key_Byte, ivByte, out errMsg);
                data.SetError(errMsg);
            }
            else
            {
                msg = msg.xFromSafeBase64();
                if (msg.Length <= 8) return data.SetError("会话已过期");
                var key = msg.Substring(0, 8);
                msg = msg.Substring(8);
                aesKey = key.xEncryptMd5();
                var key_Byte = System.Text.Encoding.UTF8.GetBytes(aesKey.Substring(0, 16));
                var ivByte = System.Text.Encoding.UTF8.GetBytes(string.Join("", aesKey.Reverse()).Substring(0, 16));
                string errMsg;
                data.Obj = msg.xAES128Decrypt(key_Byte, ivByte, out errMsg);
                data.SetError(errMsg);
            }
            return data;
        }

    }
}